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Finding the Fourth Proportional to 405,458.50, 607,597.24 and 194,850.40

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Solution

The fourth proportional to 405,458.50, 607,597.24 and 194,850.40 is: 291,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,458.50 : 607,597.24 = 194,850.40 : x
  2. Step 2: Convert to fraction form
    405,458.50/607,597.24 = 194,850.40/x
  3. Step 3: Cross multiply
    405,458.50x = 607,597.24 × 194,850.40
  4. Step 4: Simplify right side
    405,458.50x = 118,390,565,252.90
  5. Step 5: Solve for x
    x = 118,390,565,252.90/405,458.50
  6. Step 6: Final answer
    x = 291,991.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.